The number of shaded cells in all compositions of n when light shines from the northwest. Here compositions are represented by stacked columns of adjacent cells.
A372768
The number of shaded cells in all compositions of n when light shines from the northwest. Here compositions are represented by stacked columns of adjacent cells.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =13a(4) =34a(5) =85a(6) =199a(7) =454a(8) =1011a(9) =2220a(10) =4813a(11) =10351a(12) =22104a(13) =46948a(14) =99266a(15) =209113
External references
- oeis: A372768